Comprehensive analysis method for stability of excavation unloading rock mass

A technology of excavation, unloading and comprehensive analysis, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc., and can solve the problem of rare engineering stability analysis and evaluation.

Inactive Publication Date: 2013-01-30
CHINA THREE GORGES UNIV
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Problems solved by technology

At present, there are more and more studies on the mechanical properties of excavation and unloading rock mass at home and abroa...

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  • Comprehensive analysis method for stability of excavation unloading rock mass

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Embodiment Construction

[0018] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] see figure 1 , a method for comprehensively analyzing the stability of excavated and unloaded rock mass, it comprises the following steps:

[0020] The first step is to understand the basic data of the rock mass. For specific engineering practice, we should first start with the analysis of geological conditions. When analyzing geological data combined with on-site exploration, we should clarify the stability of the regional geological structure, the topography and geomorphology of the research area, and the research area. The lithology of the formation, the geological structure of the study area, the hydrogeological conditions of the study area, the distribution characteristics of the stress distribution in the study area and the initial mechanical parameters of the rock mass are the prerequisites for the subsequent steps;

[0021] The second ste...

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Abstract

The invention relates to a comprehensive analysis method for the stability of an excavation unloading rock mass. The comprehensive analysis method comprises the following steps of: firstly, recognizing basic data of the rock mass; secondly, researching the mechanical properties of the unloading rock mass; thirdly, analyzing the multi-station stability of the unloading rock mass; fourthly, optimally designing an excavation scheme; fifthly, taking support measures to protect the rock mass; and sixthly, monitoring the rock mass and carrying out inverse analysis. According to the comprehensive analysis method disclosed by the invention, when the stability of the excavation unloading rock mass is analyzed, a main idea is realized by recognizing the rock mass, utilizing the rock mass, supporting the rock mass and monitoring the rock mass; the analysis is realized by integrating the knowledge from multidisciplinary and applying a systematic method; and the detailed flows of stable analysis of the excavation unloading rock mass in specific projects are provided.

Description

technical field [0001] The invention relates to a comprehensive analysis method for excavation and unloading rock mass stability, belonging to the field of water conservancy and hydropower engineering. Background technique [0002] The study of unloading rock mechanics involves many disciplines, such as engineering geology, survey technology, engineering mechanics, engineering structure and construction, engineering mathematics, computer and economics. The solution to unloading rock mechanics needs to be studied with the principles and methods of system engineering. Traditional rock mass stability analysis methods seldom consider the characteristics of rock mass quality damage and deterioration caused by rock mass excavation and unloading, and seldom use the principles and methods of system engineering to analyze. It is after the excavation of the rock mass that part of the direction of the rock mass is in an unloaded stress state. The mechanical properties of the rock mass...

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Application Information

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IPC IPC(8): E02D1/00
Inventor 王乐华李建林邓华锋刘杰黄宜胜王瑞红赵二平王宇王兴霞郭永成孙旭曙
Owner CHINA THREE GORGES UNIV
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